const promise1 = new Promise((resolve, reject) => {
  setTimeout(() => {
    resolve("success");
    console.log("timer1");
  }, 1000);
  console.log("promise1里的内容");
});
const promise2 = promise1.then(() => {
  throw new Error("error!!!");
});
console.log("promise1", promise1);
console.log("promise2", promise2);
setTimeout(() => {
  console.log("timer2");
  console.log("promise1", promise1);
  console.log("promise2", promise2);
}, 2000);

// promise1里的内容
// promise1 Promise<pending>
// promise2 Promise<pending>
// timer1
// timer2
// promise1 Promise<resolve>
// promise2 Promise<resolve>

// 'promise1里的内容'
// 'promise1' Promise{<pending>}
// 'promise2' Promise{<pending>}
// 'timer1'
// test5.html:102 Uncaught (in promise) Error: error!!! at test.html:102
// 'timer2'
// 'promise1' Promise{<resolved>: "success"}
// 'promise2' Promise{<rejected>: Error: error!!!}
